rockchip: rk3568: Move DM_RESET in arch kconfig

Like other rockchip SoCs, DM_RESET is useful across rk3568
platform.

Select it from arch kconfig.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>